Glass mold



Dec. 7 1926. 1,609,707

8. c. GILLIGAN GLASS MOLD Filed July 17, 1924 ar/70rd C. 6/7/9670 Patented Dec. 7, 1926.

BERNARD C. GILLIGAN, OF TOLEDO, OHIO.

GLASS MOLD.

Application filedlJ'uly 17,

The present invention relates to improvements in molds, such as are employed in the manufacture of blown glassware. More particularly, the invention relates to molds for the purposes described in which a suitable bodyor shell is provided wth a composition lining so that the glass being blown will not contact with the metal shell or casin of the mold'.

arious compositions for lining such molds have been proposed, examples being described in my earlier Patents Nos. 892,589, dated July 7, 1908; 1,165,003, dated December 31, 1915, and No. 1,319,151, dated October 21, 1919.

,The particular object of the present invention is to provide an improved means for connecting the composition lining to the metal shell or casing of the mold so that the connection between these parts will not be loosened or impaired during the operation of shaping the lining to provide a chamber of the desired contour, or during manipulation of the mold when in use.

It is very important that the composition liningshould be permanently secured to the metal mold shell or casing and the resent invention provides a means for e ecting this, which is believed to be superior to any that have been heretofore proposed.

With the'foregoing and other objects in view, the invention consists in the construction and arrangement of parts that willbe hereinafter particularly pointed out and described.

Fig. 1 is an elevation of a mold constructed in accordance with the present invention. Fig. 2 is an elevation showing the mold Fi 3 is a sectional plan substantially on the line 3-3 of Figure 1.

Fig. 4 illustrates a slight modification.

Referring to the drawing, in which corresponding reference characters designate like parts in the several views, the mold embodying the present invention which I have illustrated comprises a metal shell including two sections 1, 2, which are hinged together, as by a pin 3 extending through aligned passages in cars 4, 5, projecting from the casing sections and to each section is secured a han- V dle 6, by-whichthe sections may be-closed or moved apart as desired.

The metal casing sections 1, 2, will be of any suitable dimensions and form depending upon the articles to be produced therein and 1924. serial No. 726,540.

cross section and form such an interlock' between the metal shell and the body of the lining that these .parts cannot be readily separated.

To additionally connect the lining 8 with each metal section, I preferably employ the auxiliary connecting means that will now be described. i I

9 designates a series of internally threaded sockets, which are formed in the metal shell sections with their outer ends as close as possible to the inner face of said shell. In said sockets are fitted screws 10 having enlarged heads 11, which are received in suitably countersunk recesses formed partially in the metal body 1, 2, and partly in the composition lining 8; The enlarged heads of the screws 10 do not project beyond the meeting surfaces of the mold sections so that,

the latter can be tightly closed one upon the other, but said heads overlie portions of the lining 8 and effectually prevent movement thereof outward from the metal body.

Each mold section is further provided with a series of adjustable members that extend through, the body of the section into contact with the outer surface of-the' composition-lining, and which may be actuated to force the lining 8 bodily toward the heads of the securing screws 10.

As shown, these means comprise a series of screws 12 that are threaded into suitable passages formed in the metal mold sections, the heads thereof being received in suitable recesses. screws 12 the inner ends thereof will exert pressure on the. lining body 8 tending to force such body outward into very close engagemcnt with the enlarged heads 11 of the screws 10.

' In'initially applying the composition lining to the mold sections the inner faces of the latter are coated with a suitable; cement.

, which, by the subsequent action of heat, will It will be seen that by turning the harden and act to connect the lining to the metal surface. This being supplemented by the described positive connections afforded by the screws 10, 12, effectually prevents any relative movement between the composition lining and the metal shell. The mold cavity, of any desired form, may be cut in the composition lining after the same has been secured in the metal shells and the fastening means described will prevent such cutting operation from loosening the connection between the lining and shell. 7

Instead of depending upon the enlarged heads of the screws 10 as a means for retaining the composition lining in place, small plates 15 positioned in suitable countersunk recesses formed in the lining and body of the shell may be provided about the screws 10, as shown in Figure 4:. a

It will be noted that the internally threaded sockets 9 are formed entirely in the metal body of the mold shell, and that only the heads of the fastening screws project into contact with the composition linmg.

The composition employed for lining the molds is produced in blocks of suitable form,

and is hard, so that it can be turned on a lathe to the desired shape and dimensions.

A block of the composition is first turned to a size in which it will fit readily into each half of the iron shell, the dovetailed ribs being of such dimensions that they will slip into the grooves provided therefor in the shell. Before slipping a block into its shell section, the outer surface of the block and the inner surface of the shell may be coated with a suitable cement, as before re-' ferred to. The blocks will be initially formed, so that, when positioned in the shells as just described, the faces thereof will be substantially flush with the face of The composition will then be drilled, countersunk and tapped for the screws or retaining plates, and there after the set screws 12 will be adjusted so that the lining block bears close against the heads of the screws 10, or the plates 15.

\ Then the mold section will be heated to' set the cement between the lining and metal body, and the two mold sections then connected by the'hinge pin 3.

The mold is then ready to be placed on a lathe, and .a cavity of the desired form turned therein. Any suitable implements may be employed to shape and finish the cavity.

No claim is made to the novel method herein described for providing a metal mold with a composition lining as this forms the subject matter of a divisional application filed April 21, 1926, Serial Number 103,552.

I claim':

' 1. A glass mold comprising a metal shell, a composition lining, and means separable from both the shell and lining connecting said parts and preventing relative movement between them in any direction.

2. A glass. mold comprising a sectional metal shell, a composition facing on the inner surface of each said section, and means separable from both the shell and facing connecting each section of the shell and its associated facing and preventing any relative movement between them.

3. A glass mold comprising a sectional metal shell, a composition facing on the inner surface of each said section, and means rigid with the metal shell engaging the facing to prevent movement of the latter away from the shell section.

4:. A glass mold comprising a sectional metal shell, a composition facing on the inner surface of each said section, retaining means rigid with the metal shell engaging the facing to prevent movement of the latter away from the shell section, and adjustable means extending through the metal shell and acting to force the facing into engagement with said retaining means.

5. A glass mold comprising a sectional metal shell, a composition facing on the inner surface of each said section, retaining means rigid with the metal shell engaging the facing to prevent movement of the latter away from the shell section, relative movement between the metal shell and facingbeing additionally prevented by interlocking projections and recesses on the adjacent surfaces, and adjustable means extending through the metal shell and acting to force the facing into engagement with said retaining means.

6. A glass mold comprising two half sectionshinged together. and each including a metal shell, and a composition lining for said shell section, and means secured to the metal shell and engaging the composition ing provided with interengaging' grooves and ribs, and supplemental means securing the lining to the shell including screws engaging threaded sockets in the metal shell and having enlarged heads engaging both the shell and lining.

8. A glass mold comprising a sectional metal shell, a composition lining for the inner surface of each section of the shell, and screws engaging. sockets in the edges of each shell section and having enlarged heads seated in recesses formed partly in the shell'and partly in the lining and preventing relative movement between the shell and lining.

9. A glass mold comprising a sectional metal shell, a composition lining for the inner surface of each section of the shell, screws engaging sockets in the edges of each shell section and having at their outer ends means engaging the lining, and adjustable means extending through the shell section and exerting pressure on the lining to hold it against the lining engaging means at the outer ends of the screws.

10. A glass mold comprising a plurality of sections each-including a metal shell, and

a composition lining on the inner face of the shell, screws engaging sockets in the edges of each shell section and having enlarged heads seated in recesses formed partly in the shell and partly in the linshell to exert pressure on the baokof the lining to force it into engagement with the.

heads of said screws.

11. A glass mold comprising a plurality of sections each including a metalshell and a composition lining on the inner face of the shell, means secured to the metal shell and overhanging the adjacent edge of the lining, and a plurality of screws extending through the metal shell and exerting pres-.

' tween them.

and means operating through the metal a composition lining on the inner face of the shell, a cement coating between the shell and lining, and screws engaging sockets in the edges of the metal shell and engaging the limng to prevent relative movement be- 13. A glass mold comprising a lurality of sections each including a metal s ell and a composition lining on the inner face of the shell, a layer of cement between the huing and shell, and means secured to the edges of the shell and engaging the lining to prevent relative movement etween the shell and lining.

14:. A glass mold comprising a plurality of sections each including a metal shell and a composition lining on the inner face of the shell, a layer of cement between the li'ning and shell, retaining means secured to the edges of the shell and engaging the lining, and a plurality of screws extending through the shell and into contact withlthe lining to hold the latter in close engagement with said retaining means.

In testimony whereof I have hereunto set my hand.

a BERNARD (J. GILLIGAN. 

